<!DOCTYPE HTML>
<html lang="zh-CN">


<head>
    <meta charset="utf-8">
    <meta name="keywords" content="人脸检测+数据训练+人脸识别, 阿狸的日志">
    <meta name="description" content="">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
    <meta name="renderer" content="webkit|ie-stand|ie-comp">
    <meta name="mobile-web-app-capable" content="yes">
    <meta name="format-detection" content="telephone=no">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
    <!-- Global site tag (gtag.js) - Google Analytics -->


    <title>人脸检测+数据训练+人脸识别 | 阿狸的日志</title>
    <link rel="icon" type="image/png" href="/favicon.png">

    <link rel="stylesheet" type="text/css" href="/libs/awesome/css/all.css">
    <link rel="stylesheet" type="text/css" href="/libs/materialize/materialize.min.css">
    <link rel="stylesheet" type="text/css" href="/libs/aos/aos.css">
    <link rel="stylesheet" type="text/css" href="/libs/animate/animate.min.css">
    <link rel="stylesheet" type="text/css" href="/libs/lightGallery/css/lightgallery.min.css">
    <link rel="stylesheet" type="text/css" href="/css/matery.css">
    <link rel="stylesheet" type="text/css" href="/css/my.css">

    <script src="/libs/jquery/jquery.min.js"></script>

<meta name="generator" content="Hexo 5.4.0"></head>




<body>
    <header class="navbar-fixed">
    <nav id="headNav" class="bg-color nav-transparent">
        <div id="navContainer" class="nav-wrapper container">
            <div class="brand-logo">
                <a href="/" class="waves-effect waves-light">
                    
                    <img src="/medias/logo.png" class="logo-img" alt="LOGO">
                    
                    <span class="logo-span">阿狸的日志</span>
                </a>
            </div>
            

<a href="#" data-target="mobile-nav" class="sidenav-trigger button-collapse"><i class="fas fa-bars"></i></a>
<ul class="right nav-menu">
  
  <li class="hide-on-med-and-down nav-item">
    
    <a href="/" class="waves-effect waves-light">
      
      <i class="fas fa-home" style="zoom: 0.6;"></i>
      
      <span>首页</span>
    </a>
    
  </li>
  
  <li class="hide-on-med-and-down nav-item">
    
    <a href="/tags" class="waves-effect waves-light">
      
      <i class="fas fa-tags" style="zoom: 0.6;"></i>
      
      <span>标签</span>
    </a>
    
  </li>
  
  <li class="hide-on-med-and-down nav-item">
    
    <a href="/categories" class="waves-effect waves-light">
      
      <i class="fas fa-bookmark" style="zoom: 0.6;"></i>
      
      <span>分类</span>
    </a>
    
  </li>
  
  <li class="hide-on-med-and-down nav-item">
    
    <a href="/archives" class="waves-effect waves-light">
      
      <i class="fas fa-archive" style="zoom: 0.6;"></i>
      
      <span>归档</span>
    </a>
    
  </li>
  
  <li class="hide-on-med-and-down nav-item">
    
    <a href="/about" class="waves-effect waves-light">
      
      <i class="fas fa-user-circle" style="zoom: 0.6;"></i>
      
      <span>关于</span>
    </a>
    
  </li>
  
  <li class="hide-on-med-and-down nav-item">
    
    <a href="/contact" class="waves-effect waves-light">
      
      <i class="fas fa-comments" style="zoom: 0.6;"></i>
      
      <span>留言板</span>
    </a>
    
  </li>
  
  <li class="hide-on-med-and-down nav-item">
    
    <a href="/friends" class="waves-effect waves-light">
      
      <i class="fas fa-address-book" style="zoom: 0.6;"></i>
      
      <span>友情链接</span>
    </a>
    
  </li>
  
  <li>
    <a href="#searchModal" class="modal-trigger waves-effect waves-light">
      <i id="searchIcon" class="fas fa-search" title="搜索" style="zoom: 0.85;"></i>
    </a>
  </li>
</ul>


<div id="mobile-nav" class="side-nav sidenav">

    <div class="mobile-head bg-color">
        
        <img src="/medias/logo.png" class="logo-img circle responsive-img">
        
        <div class="logo-name">阿狸的日志</div>
        <div class="logo-desc">
            
            Never really desperate, only the lost of the soul.
            
        </div>
    </div>

    

    <ul class="menu-list mobile-menu-list">
        
        <li class="m-nav-item">
	  
		<a href="/" class="waves-effect waves-light">
			
			    <i class="fa-fw fas fa-home"></i>
			
			首页
		</a>
          
        </li>
        
        <li class="m-nav-item">
	  
		<a href="/tags" class="waves-effect waves-light">
			
			    <i class="fa-fw fas fa-tags"></i>
			
			标签
		</a>
          
        </li>
        
        <li class="m-nav-item">
	  
		<a href="/categories" class="waves-effect waves-light">
			
			    <i class="fa-fw fas fa-bookmark"></i>
			
			分类
		</a>
          
        </li>
        
        <li class="m-nav-item">
	  
		<a href="/archives" class="waves-effect waves-light">
			
			    <i class="fa-fw fas fa-archive"></i>
			
			归档
		</a>
          
        </li>
        
        <li class="m-nav-item">
	  
		<a href="/about" class="waves-effect waves-light">
			
			    <i class="fa-fw fas fa-user-circle"></i>
			
			关于
		</a>
          
        </li>
        
        <li class="m-nav-item">
	  
		<a href="/contact" class="waves-effect waves-light">
			
			    <i class="fa-fw fas fa-comments"></i>
			
			留言板
		</a>
          
        </li>
        
        <li class="m-nav-item">
	  
		<a href="/friends" class="waves-effect waves-light">
			
			    <i class="fa-fw fas fa-address-book"></i>
			
			友情链接
		</a>
          
        </li>
        
        
    </ul>
</div>


        </div>

        
    </nav>

</header>

    



<div class="bg-cover pd-header post-cover" style="background-image: url('/medias/featureimages/16.jpg')">
    <div class="container" style="right: 0px;left: 0px;">
        <div class="row">
            <div class="col s12 m12 l12">
                <div class="brand">
                    <h1 class="description center-align post-title">人脸检测+数据训练+人脸识别</h1>
                </div>
            </div>
        </div>
    </div>
</div>




<main class="post-container content">

    
    <link rel="stylesheet" href="/libs/tocbot/tocbot.css">
<style>
    #articleContent h1::before,
    #articleContent h2::before,
    #articleContent h3::before,
    #articleContent h4::before,
    #articleContent h5::before,
    #articleContent h6::before {
        display: block;
        content: " ";
        height: 100px;
        margin-top: -100px;
        visibility: hidden;
    }

    #articleContent :focus {
        outline: none;
    }

    .toc-fixed {
        position: fixed;
        top: 64px;
    }

    .toc-widget {
        width: 345px;
        padding-left: 20px;
    }

    .toc-widget .toc-title {
        padding: 35px 0 15px 17px;
        font-size: 1.5rem;
        font-weight: bold;
        line-height: 1.5rem;
    }

    .toc-widget ol {
        padding: 0;
        list-style: none;
    }

    #toc-content {
        padding-bottom: 30px;
        overflow: auto;
    }

    #toc-content ol {
        padding-left: 10px;
    }

    #toc-content ol li {
        padding-left: 10px;
    }

    #toc-content .toc-link:hover {
        color: #42b983;
        font-weight: 700;
        text-decoration: underline;
    }

    #toc-content .toc-link::before {
        background-color: transparent;
        max-height: 25px;

        position: absolute;
        right: 23.5vw;
        display: block;
    }

    #toc-content .is-active-link {
        color: #42b983;
    }

    #floating-toc-btn {
        position: fixed;
        right: 15px;
        bottom: 76px;
        padding-top: 15px;
        margin-bottom: 0;
        z-index: 998;
    }

    #floating-toc-btn .btn-floating {
        width: 48px;
        height: 48px;
    }

    #floating-toc-btn .btn-floating i {
        line-height: 48px;
        font-size: 1.4rem;
    }
</style>
<div class="row">
    <div id="main-content" class="col s12 m12 l9">
        <!-- 文章内容详情 -->
<div id="artDetail">
    <div class="card">
        <div class="card-content article-info">
            <div class="row tag-cate">
                <div class="col s7">
                    
                    <div class="article-tag">
                        
                            <a href="/tags/%E4%BA%BA%E8%84%B8%E8%AF%86%E5%88%AB/">
                                <span class="chip bg-color">人脸识别</span>
                            </a>
                        
                    </div>
                    
                </div>
                <div class="col s5 right-align">
                    
                    <div class="post-cate">
                        <i class="fas fa-bookmark fa-fw icon-category"></i>
                        
                            <a href="/categories/%E7%BC%96%E7%A8%8B/" class="post-category">
                                编程
                            </a>
                        
                    </div>
                    
                </div>
            </div>

            <div class="post-info">
                
                <div class="post-date info-break-policy">
                    <i class="far fa-calendar-minus fa-fw"></i>发布日期:&nbsp;&nbsp;
                    2021-04-19
                </div>
                

                

                

                

                
            </div>
        </div>
        <hr class="clearfix">

        
        <!-- 是否加载使用自带的 prismjs. -->
        <link rel="stylesheet" href="/libs/prism/prism.css">
        

        

        <div class="card-content article-card-content">
            <div id="articleContent">
                <p>准备工作：<br>安装opencv</p>
<pre class="line-numbers language-python" data-language="python"><code class="language-python">pip install opencv<span aria-hidden="true" class="line-numbers-rows"><span></span></span></code></pre>
<p>安装opencv-contrib</p>
<pre class="line-numbers language-python" data-language="python"><code class="language-python">pip install opencv<span class="token operator">-</span>contrib<span aria-hidden="true" class="line-numbers-rows"><span></span></span></code></pre>
<p>创建文件夹，文件结构为：<br><img src="https://img-blog.csdnimg.cn/20201114091820994.png#pic_center" alt="在这里插入图片描述"></p>
<h2 id="一、编写一个基础的人脸识别"><a href="#一、编写一个基础的人脸识别" class="headerlink" title="一、编写一个基础的人脸识别"></a>一、编写一个基础的人脸识别</h2><pre class="line-numbers language-python" data-language="python"><code class="language-python"><span class="token keyword">import</span> cv2 <span class="token keyword">as</span> cv

<span class="token keyword">def</span> <span class="token function">face_detect_demo</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">:</span>
<span class="token comment"># ----------------------------------------------将图片灰度化----------------------------------------------</span>
        gray <span class="token operator">=</span> cv<span class="token punctuation">.</span>cvtColor<span class="token punctuation">(</span>img<span class="token punctuation">,</span> cv<span class="token punctuation">.</span>COLOR_BGR2GRAY<span class="token punctuation">)</span>
        <span class="token comment"># 加载特征数据</span>
        face_detector <span class="token operator">=</span> cv<span class="token punctuation">.</span>CascadeClassifier<span class="token punctuation">(</span><span class="token string">'C:/Program Files (x86)/opencv/sources/data/haarcascades/haarcascade_frontalface_default.xml'</span><span class="token punctuation">)</span>
        faces <span class="token operator">=</span> face_detector<span class="token punctuation">.</span>detectMultiScale<span class="token punctuation">(</span>gray<span class="token punctuation">)</span>
        <span class="token keyword">for</span> x<span class="token punctuation">,</span> y<span class="token punctuation">,</span> w<span class="token punctuation">,</span> h <span class="token keyword">in</span> faces<span class="token punctuation">:</span>
            cv<span class="token punctuation">.</span>rectangle<span class="token punctuation">(</span>img<span class="token punctuation">,</span> <span class="token punctuation">(</span>x<span class="token punctuation">,</span> y<span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token punctuation">(</span>x <span class="token operator">+</span> w<span class="token punctuation">,</span> y <span class="token operator">+</span> h<span class="token punctuation">)</span><span class="token punctuation">,</span> color<span class="token operator">=</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">255</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">)</span><span class="token punctuation">,</span> thickness<span class="token operator">=</span><span class="token number">2</span><span class="token punctuation">)</span>
        cv<span class="token punctuation">.</span>imshow<span class="token punctuation">(</span><span class="token string">'result'</span><span class="token punctuation">,</span>img<span class="token punctuation">)</span>

<span class="token comment">#加载图片</span>
img <span class="token operator">=</span> cv<span class="token punctuation">.</span>imread<span class="token punctuation">(</span><span class="token string">'C:/Users/Administrator/Desktop/my.jpg'</span><span class="token punctuation">)</span>
face_detect_demo<span class="token punctuation">(</span><span class="token punctuation">)</span>
cv<span class="token punctuation">.</span>waitKey<span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">)</span>
cv<span class="token punctuation">.</span>destroyAllWindows<span class="token punctuation">(</span><span class="token punctuation">)</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<h2 id="二、下载或者使用自己照片当训练素材"><a href="#二、下载或者使用自己照片当训练素材" class="headerlink" title="二、下载或者使用自己照片当训练素材"></a>二、下载或者使用自己照片当训练素材</h2><p>照片放在data下面的jm文件夹下面，照片名称是我们后面使用到的ID，命名要规范，后缀要一致。如下：<br><img src="https://img-blog.csdnimg.cn/20201114092224800.png#pic_center" alt="在这里插入图片描述"></p>
<p>我10张照片里面选了 1-3为马云的,4-7为普京的,8-10是周杰伦的照片。进行训练识别。</p>
<h2 id="三、编写训练代码："><a href="#三、编写训练代码：" class="headerlink" title="三、编写训练代码："></a>三、编写训练代码：</h2><pre class="line-numbers language-python" data-language="python"><code class="language-python"><span class="token keyword">import</span> cv2
<span class="token keyword">import</span> os
<span class="token keyword">import</span> sys
<span class="token keyword">from</span> PIL <span class="token keyword">import</span> Image
<span class="token keyword">import</span> numpy <span class="token keyword">as</span> np
<span class="token keyword">def</span> <span class="token function">getImageAndLabels</span><span class="token punctuation">(</span>path<span class="token punctuation">)</span><span class="token punctuation">:</span>
    facesSamples<span class="token operator">=</span><span class="token punctuation">[</span><span class="token punctuation">]</span>
    ids<span class="token operator">=</span><span class="token punctuation">[</span><span class="token punctuation">]</span>
    imagePaths<span class="token operator">=</span><span class="token punctuation">[</span>os<span class="token punctuation">.</span>path<span class="token punctuation">.</span>join<span class="token punctuation">(</span>path<span class="token punctuation">,</span>f<span class="token punctuation">)</span> <span class="token keyword">for</span> f <span class="token keyword">in</span> os<span class="token punctuation">.</span>listdir<span class="token punctuation">(</span>path<span class="token punctuation">)</span><span class="token punctuation">]</span>
    <span class="token keyword">print</span><span class="token punctuation">(</span>imagePaths<span class="token punctuation">)</span>
    <span class="token comment"># 检测人脸</span>
    face_detector <span class="token operator">=</span> cv2<span class="token punctuation">.</span>CascadeClassifier<span class="token punctuation">(</span>
        <span class="token string">'C:/Program Files (x86)/opencv/sources/data/haarcascades/haarcascade_frontalface_default.xml'</span><span class="token punctuation">)</span>

    <span class="token comment"># 遍历列表中的图片</span>
    <span class="token keyword">for</span> imagePath <span class="token keyword">in</span> imagePaths<span class="token punctuation">:</span>
        <span class="token comment"># 打开图片</span>
        PIL_img <span class="token operator">=</span> Image<span class="token punctuation">.</span><span class="token builtin">open</span><span class="token punctuation">(</span>imagePath<span class="token punctuation">)</span><span class="token punctuation">.</span>convert<span class="token punctuation">(</span><span class="token string">'L'</span><span class="token punctuation">)</span>
        <span class="token comment"># 将图像转换为数组</span>
        img_numpy <span class="token operator">=</span> np<span class="token punctuation">.</span>array<span class="token punctuation">(</span>PIL_img<span class="token punctuation">,</span><span class="token string">'uint8'</span><span class="token punctuation">)</span>
        faces <span class="token operator">=</span> face_detector<span class="token punctuation">.</span>detectMultiScale<span class="token punctuation">(</span>img_numpy<span class="token punctuation">)</span>
        <span class="token comment"># 获取每张图片的id</span>
        <span class="token keyword">print</span><span class="token punctuation">(</span>os<span class="token punctuation">.</span>path<span class="token punctuation">.</span>split<span class="token punctuation">(</span>imagePath<span class="token punctuation">)</span><span class="token punctuation">)</span>
        <span class="token builtin">id</span> <span class="token operator">=</span> <span class="token builtin">int</span><span class="token punctuation">(</span>os<span class="token punctuation">.</span>path<span class="token punctuation">.</span>split<span class="token punctuation">(</span>imagePath<span class="token punctuation">)</span><span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">]</span><span class="token punctuation">.</span>split<span class="token punctuation">(</span><span class="token string">'.'</span><span class="token punctuation">)</span><span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span><span class="token punctuation">)</span>
        <span class="token keyword">for</span> x<span class="token punctuation">,</span>y<span class="token punctuation">,</span>w<span class="token punctuation">,</span>h <span class="token keyword">in</span> faces<span class="token punctuation">:</span>
            facesSamples<span class="token punctuation">.</span>append<span class="token punctuation">(</span>img_numpy<span class="token punctuation">[</span>y<span class="token punctuation">:</span>y<span class="token operator">+</span>h<span class="token punctuation">,</span>x<span class="token punctuation">:</span>x<span class="token operator">+</span>w<span class="token punctuation">]</span><span class="token punctuation">)</span>
            ids<span class="token punctuation">.</span>append<span class="token punctuation">(</span><span class="token builtin">id</span><span class="token punctuation">)</span>
    <span class="token keyword">return</span> facesSamples<span class="token punctuation">,</span>ids


<span class="token keyword">if</span> __name__<span class="token operator">==</span> <span class="token string">'__main__'</span><span class="token punctuation">:</span>
    <span class="token comment">#图片路径</span>
    path <span class="token operator">=</span> <span class="token string">'./data/jm/'</span>
    <span class="token comment">#获取图像 数组和id标签</span>
    faces<span class="token punctuation">,</span>ids<span class="token operator">=</span>getImageAndLabels<span class="token punctuation">(</span>path<span class="token punctuation">)</span>
    <span class="token comment">#获取循环对象</span>
    recognizer <span class="token operator">=</span> cv2<span class="token punctuation">.</span>face<span class="token punctuation">.</span>LBPHFaceRecognizer_create<span class="token punctuation">(</span><span class="token punctuation">)</span>
    recognizer<span class="token punctuation">.</span>train<span class="token punctuation">(</span>faces<span class="token punctuation">,</span>np<span class="token punctuation">.</span>array<span class="token punctuation">(</span>ids<span class="token punctuation">)</span><span class="token punctuation">)</span>
    <span class="token comment">#保存文件</span>
    recognizer<span class="token punctuation">.</span>write<span class="token punctuation">(</span><span class="token string">'trainer/trainer.yml'</span><span class="token punctuation">)</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>运行代码后就会生成一个yml文件，这个文件路径我设置在trainer文件夹下面。<br>五、编写人脸识别代码：</p>
<pre class="line-numbers language-python" data-language="python"><code class="language-python"><span class="token keyword">import</span> cv2
<span class="token keyword">import</span> numpy <span class="token keyword">as</span> np
<span class="token keyword">import</span> os

<span class="token comment"># 1-3,4-7,8-10</span>
names <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">''</span><span class="token punctuation">,</span><span class="token string">'MY'</span><span class="token punctuation">,</span><span class="token string">'MY'</span><span class="token punctuation">,</span><span class="token string">'MY'</span><span class="token punctuation">,</span><span class="token string">'president:pitin'</span><span class="token punctuation">,</span><span class="token string">'president:pitin'</span><span class="token punctuation">,</span><span class="token string">'president:pitin'</span><span class="token punctuation">,</span><span class="token string">'president:pitin'</span><span class="token punctuation">,</span><span class="token string">'jay'</span><span class="token punctuation">,</span><span class="token string">'jay'</span><span class="token punctuation">,</span><span class="token string">'jay'</span><span class="token punctuation">,</span><span class="token punctuation">]</span>


<span class="token comment"># 加载训练数据和文件</span>
recognizer <span class="token operator">=</span> cv2<span class="token punctuation">.</span>face<span class="token punctuation">.</span>LBPHFaceRecognizer_create<span class="token punctuation">(</span><span class="token punctuation">)</span>
recognizer<span class="token punctuation">.</span>read<span class="token punctuation">(</span><span class="token string">'trainer/trainer.yml'</span><span class="token punctuation">)</span>
<span class="token comment">#准备识别的图片</span>
img <span class="token operator">=</span> cv2<span class="token punctuation">.</span>imread<span class="token punctuation">(</span><span class="token string">'C:/Users/Administrator/Desktop/6.jpg'</span><span class="token punctuation">)</span>
gray <span class="token operator">=</span> cv2<span class="token punctuation">.</span>cvtColor<span class="token punctuation">(</span>img<span class="token punctuation">,</span>cv2<span class="token punctuation">.</span>COLOR_BGR2GRAY<span class="token punctuation">)</span>
face_detector <span class="token operator">=</span> cv2<span class="token punctuation">.</span>CascadeClassifier<span class="token punctuation">(</span><span class="token string">'C:/Program Files (x86)/opencv/sources/data/haarcascades/haarcascade_frontalface_default.xml'</span><span class="token punctuation">)</span>
faces <span class="token operator">=</span> face_detector<span class="token punctuation">.</span>detectMultiScale<span class="token punctuation">(</span>gray<span class="token punctuation">,</span>minNeighbors<span class="token operator">=</span><span class="token number">30</span><span class="token punctuation">)</span>
<span class="token keyword">for</span> x<span class="token punctuation">,</span>y<span class="token punctuation">,</span>w<span class="token punctuation">,</span>h <span class="token keyword">in</span> faces<span class="token punctuation">:</span>
    <span class="token builtin">id</span><span class="token punctuation">,</span> confidence <span class="token operator">=</span> recognizer<span class="token punctuation">.</span>predict<span class="token punctuation">(</span>gray<span class="token punctuation">[</span>y<span class="token punctuation">:</span>y <span class="token operator">+</span> h<span class="token punctuation">,</span> x<span class="token punctuation">:</span>x <span class="token operator">+</span> w<span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token comment"># 人脸识别</span>
    cv2<span class="token punctuation">.</span>rectangle<span class="token punctuation">(</span>img<span class="token punctuation">,</span><span class="token punctuation">(</span>x<span class="token punctuation">,</span>y<span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token punctuation">(</span>x<span class="token operator">+</span>w<span class="token punctuation">,</span>y<span class="token operator">+</span>h<span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">,</span><span class="token number">255</span><span class="token punctuation">,</span><span class="token number">0</span><span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token number">2</span><span class="token punctuation">)</span>
    name <span class="token operator">=</span> names<span class="token punctuation">[</span><span class="token builtin">id</span><span class="token punctuation">]</span>
    cv2<span class="token punctuation">.</span>putText<span class="token punctuation">(</span>img<span class="token punctuation">,</span>name<span class="token punctuation">,</span><span class="token punctuation">(</span>x<span class="token punctuation">,</span>y<span class="token punctuation">)</span><span class="token punctuation">,</span>cv2<span class="token punctuation">.</span>FONT_HERSHEY_COMPLEX<span class="token punctuation">,</span><span class="token number">1</span><span class="token punctuation">,</span><span class="token punctuation">(</span><span class="token number">128</span><span class="token punctuation">,</span><span class="token number">128</span><span class="token punctuation">,</span><span class="token number">0</span><span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token number">2</span><span class="token punctuation">)</span>
    <span class="token keyword">print</span><span class="token punctuation">(</span><span class="token string">'标签id:'</span><span class="token punctuation">,</span><span class="token builtin">id</span><span class="token punctuation">,</span><span class="token string">'置信评分:'</span><span class="token punctuation">,</span>confidence<span class="token punctuation">)</span>
cv2<span class="token punctuation">.</span>imshow<span class="token punctuation">(</span><span class="token string">'result'</span><span class="token punctuation">,</span>img<span class="token punctuation">)</span>
cv2<span class="token punctuation">.</span>waitKey<span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">)</span>
cv2<span class="token punctuation">.</span>destroyAllWindows<span class="token punctuation">(</span><span class="token punctuation">)</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<h2 id="总结："><a href="#总结：" class="headerlink" title="总结："></a>总结：</h2><p>基础的人脸检测的思路是：<br>1.灰度化图片<br>2.加载特征数据<br>3.检测灰度图片中的人脸(可以是多个人脸)，获取每一个的人脸坐标<br>5.遍历绘制人脸框，显示图像<br>6.释放capture内存，销毁所有窗口。</p>
<p>训练数据的思路：<br>1.在上面基础上，遍历获取ID和人脸的宽度和高度(y:y+h,x:x+w)<br>2.创建<code>cv2.face.LBPHFaceRecognizer_create()</code>LBPHFF特征算法类<br>3.使用<code>.train(faces,np.array(ids))</code>进行训练。<br>4.保存yml文件<code>.write(&#39;trainer/trainer.yml&#39;)</code></p>
<p>人脸识别思路：<br>1.导入数据文件</p>
<pre class="line-numbers language-python" data-language="python"><code class="language-python"><span class="token comment"># 加载训练数据和文件</span>
recognizer <span class="token operator">=</span> cv2<span class="token punctuation">.</span>face<span class="token punctuation">.</span>LBPHFaceRecognizer_create<span class="token punctuation">(</span><span class="token punctuation">)</span>
recognizer<span class="token punctuation">.</span>read<span class="token punctuation">(</span><span class="token string">'trainer/trainer.yml'</span><span class="token punctuation">)</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span></span></code></pre>
<p>2.按照基础的人脸检测方法，在遍历faces的时候，也就是在被检测的人脸中去匹配特征信息<br>使用<code>.predict(gray[y:y + h, x:x + w])</code>方法进行人脸识别。</p>
<p>3.最后使用<code>.putText(img,name,(x,y),cv2.FONT_HERSHEY_COMPLEX,1,(128,128,0),2)</code>方法进行标签的绘制。</p>
<p>经过训练后，我去网上找了一张程序从来没有见过的普京的照片。<br>然后让它识别并且给出一个置信指数，注意指数越低越靠谱，一般来说50的指数为可信度非常强，70以上可信度较弱，指数为0时，则是100%可信，也就是100%匹配。</p>
<p><img src="https://img-blog.csdnimg.cn/20201114100253480.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzE3ODAyODk1,size_16,color_FFFFFF,t_70#pic_center" alt="在这里插入图片描述"><br>结果显示 左右的图片(网上找的，程序不认识的)和训练库中id为6的图片匹配(也就是右边的图片)，置信指数55，可见可信度还是比较高的，至此为止整个人脸识别就全部完成了。</p>

                
            </div>
            <hr/>

            

    <div class="reprint" id="reprint-statement">
        
            <div class="reprint__author">
                <span class="reprint-meta" style="font-weight: bold;">
                    <i class="fas fa-user">
                        文章作者:
                    </i>
                </span>
                <span class="reprint-info">
                    <a href="/about" rel="external nofollow noreferrer">hongzhe</a>
                </span>
            </div>
            <div class="reprint__type">
                <span class="reprint-meta" style="font-weight: bold;">
                    <i class="fas fa-link">
                        文章链接:
                    </i>
                </span>
                <span class="reprint-info">
                    <a href="http://huang-hongzhe.gitee.io/2021/04/19/%E4%BA%BA%E8%84%B8%E8%AF%86%E5%88%AB/">http://huang-hongzhe.gitee.io/2021/04/19/%E4%BA%BA%E8%84%B8%E8%AF%86%E5%88%AB/</a>
                </span>
            </div>
            <div class="reprint__notice">
                <span class="reprint-meta" style="font-weight: bold;">
                    <i class="fas fa-copyright">
                        版权声明:
                    </i>
                </span>
                <span class="reprint-info">
                    本博客所有文章除特別声明外，均采用
                    <a href="https://creativecommons.org/licenses/by/4.0/deed.zh" rel="external nofollow noreferrer" target="_blank">CC BY 4.0</a>
                    许可协议。转载请注明来源
                    <a href="/about" target="_blank">hongzhe</a>
                    !
                </span>
            </div>
        
    </div>

    <script async defer>
      document.addEventListener("copy", function (e) {
        let toastHTML = '<span>复制成功，请遵循本文的转载规则</span><button class="btn-flat toast-action" onclick="navToReprintStatement()" style="font-size: smaller">查看</a>';
        M.toast({html: toastHTML})
      });

      function navToReprintStatement() {
        $("html, body").animate({scrollTop: $("#reprint-statement").offset().top - 80}, 800);
      }
    </script>



            <div class="tag_share" style="display: block;">
                <div class="post-meta__tag-list" style="display: inline-block;">
                    
                        <div class="article-tag">
                            
                                <a href="/tags/%E4%BA%BA%E8%84%B8%E8%AF%86%E5%88%AB/">
                                    <span class="chip bg-color">人脸识别</span>
                                </a>
                            
                        </div>
                    
                </div>
                <div class="post_share" style="zoom: 80%; width: fit-content; display: inline-block; float: right; margin: -0.15rem 0;">
                    <link rel="stylesheet" type="text/css" href="/libs/share/css/share.min.css">
<div id="article-share">

    

    

</div>

                </div>
            </div>
            
        </div>
    </div>

    

    

    

    

    

    

    

    

    

<article id="prenext-posts" class="prev-next articles">
    <div class="row article-row">
        
        <div class="article col s12 m6" data-aos="fade-up">
            <div class="article-badge left-badge text-color">
                <i class="fas fa-chevron-left"></i>&nbsp;上一篇</div>
            <div class="card">
                <a href="/2021/06/19/%E5%85%AC%E4%BC%97%E5%8F%B7%E5%BC%80%E5%8F%91/">
                    <div class="card-image">
                        
                        
                        <img src="/medias/featureimages/11.jpg" class="responsive-img" alt="公众号开发">
                        
                        <span class="card-title">公众号开发</span>
                    </div>
                </a>
                <div class="card-content article-content">
                    <div class="summary block-with-text">
                        
                            
                        
                    </div>
                    <div class="publish-info">
                        <span class="publish-date">
                            <i class="far fa-clock fa-fw icon-date"></i>2021-06-19
                        </span>
                        <span class="publish-author">
                            
                            <i class="fas fa-user fa-fw"></i>
                            hongzhe
                            
                        </span>
                    </div>
                </div>
                
            </div>
        </div>
        
        
        <div class="article col s12 m6" data-aos="fade-up">
            <div class="article-badge right-badge text-color">
                下一篇&nbsp;<i class="fas fa-chevron-right"></i>
            </div>
            <div class="card">
                <a href="/2021/04/19/%E6%95%B0%E6%8D%AE%E5%BA%93/">
                    <div class="card-image">
                        
                        
                        <img src="/medias/featureimages/12.jpg" class="responsive-img" alt="Mysql数据库基本操作">
                        
                        <span class="card-title">Mysql数据库基本操作</span>
                    </div>
                </a>
                <div class="card-content article-content">
                    <div class="summary block-with-text">
                        
                            
                        
                    </div>
                    <div class="publish-info">
                            <span class="publish-date">
                                <i class="far fa-clock fa-fw icon-date"></i>2021-04-19
                            </span>
                        <span class="publish-author">
                            
                            <i class="fas fa-bookmark fa-fw icon-category"></i>
                            
                            <a href="/categories/%E7%BC%96%E7%A8%8B/" class="post-category">
                                    编程
                                </a>
                            
                            
                        </span>
                    </div>
                </div>
                
                <div class="card-action article-tags">
                    
                    <a href="/tags/%E6%95%B0%E6%8D%AE%E5%BA%93/">
                        <span class="chip bg-color">数据库</span>
                    </a>
                    
                </div>
                
            </div>
        </div>
        
    </div>
</article>

</div>



<!-- 代码块功能依赖 -->
<script type="text/javascript" src="/libs/codeBlock/codeBlockFunction.js"></script>

<!-- 代码语言 -->

<script type="text/javascript" src="/libs/codeBlock/codeLang.js"></script>


<!-- 代码块复制 -->

<script type="text/javascript" src="/libs/codeBlock/codeCopy.js"></script>


<!-- 代码块收缩 -->

<script type="text/javascript" src="/libs/codeBlock/codeShrink.js"></script>


<!-- 代码块折行 -->

<style type="text/css">
code[class*="language-"], pre[class*="language-"] { white-space: pre !important; }
</style>


    </div>
    <div id="toc-aside" class="expanded col l3 hide-on-med-and-down">
        <div class="toc-widget card" style="background-color: white;">
            <div class="toc-title"><i class="far fa-list-alt"></i>&nbsp;&nbsp;目录</div>
            <div id="toc-content"></div>
        </div>
    </div>
</div>

<!-- TOC 悬浮按钮. -->

<div id="floating-toc-btn" class="hide-on-med-and-down">
    <a class="btn-floating btn-large bg-color">
        <i class="fas fa-list-ul"></i>
    </a>
</div>


<script src="/libs/tocbot/tocbot.min.js"></script>
<script>
    $(function () {
        tocbot.init({
            tocSelector: '#toc-content',
            contentSelector: '#articleContent',
            headingsOffset: -($(window).height() * 0.4 - 45),
            collapseDepth: Number('0'),
            headingSelector: 'h2, h3, h4'
        });

        // modify the toc link href to support Chinese.
        let i = 0;
        let tocHeading = 'toc-heading-';
        $('#toc-content a').each(function () {
            $(this).attr('href', '#' + tocHeading + (++i));
        });

        // modify the heading title id to support Chinese.
        i = 0;
        $('#articleContent').children('h2, h3, h4').each(function () {
            $(this).attr('id', tocHeading + (++i));
        });

        // Set scroll toc fixed.
        let tocHeight = parseInt($(window).height() * 0.4 - 64);
        let $tocWidget = $('.toc-widget');
        $(window).scroll(function () {
            let scroll = $(window).scrollTop();
            /* add post toc fixed. */
            if (scroll > tocHeight) {
                $tocWidget.addClass('toc-fixed');
            } else {
                $tocWidget.removeClass('toc-fixed');
            }
        });

        
        /* 修复文章卡片 div 的宽度. */
        let fixPostCardWidth = function (srcId, targetId) {
            let srcDiv = $('#' + srcId);
            if (srcDiv.length === 0) {
                return;
            }

            let w = srcDiv.width();
            if (w >= 450) {
                w = w + 21;
            } else if (w >= 350 && w < 450) {
                w = w + 18;
            } else if (w >= 300 && w < 350) {
                w = w + 16;
            } else {
                w = w + 14;
            }
            $('#' + targetId).width(w);
        };

        // 切换TOC目录展开收缩的相关操作.
        const expandedClass = 'expanded';
        let $tocAside = $('#toc-aside');
        let $mainContent = $('#main-content');
        $('#floating-toc-btn .btn-floating').click(function () {
            if ($tocAside.hasClass(expandedClass)) {
                $tocAside.removeClass(expandedClass).hide();
                $mainContent.removeClass('l9');
            } else {
                $tocAside.addClass(expandedClass).show();
                $mainContent.addClass('l9');
            }
            fixPostCardWidth('artDetail', 'prenext-posts');
        });
        
    });
</script>

    

</main>




    <footer class="page-footer bg-color">
    
        <link rel="stylesheet" href="/libs/aplayer/APlayer.min.css">
<style>
    .aplayer .aplayer-lrc p {
        
        font-size: 12px;
        font-weight: 700;
        line-height: 16px !important;
    }

    .aplayer .aplayer-lrc p.aplayer-lrc-current {
        
        font-size: 15px;
        color: blue;
    }

    
</style>
<div class="">
    
    <div class="row">
        <meting-js class="col l8 offset-l2 m10 offset-m1 s12"
                   server="netease"
                   type="playlist"
                   id="6717903070"
                   fixed='true'
                   autoplay='true'
                   theme='blue'
                   loop='all'
                   order='random'
                   preload='auto'
                   volume='0.7'
                   list-folded='true'
        >
        </meting-js>
    </div>
</div>

<script src="/libs/aplayer/APlayer.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/meting@2/dist/Meting.min.js"></script>

    
    <div class="container row center-align" style="margin-bottom: 15px !important;">
        <div class="col s12 m8 l8 copy-right">
            Copyright&nbsp;&copy;
            
                <span id="year">2021-2022</span>
            
            <span id="year">2021</span>
            <a href="/about" target="_blank">hongzhe</a>
            |&nbsp;Powered by&nbsp;<a href="https://hexo.io/" target="_blank">Hexo</a>
            |&nbsp;Theme&nbsp;<a href="https://github.com/blinkfox/hexo-theme-matery" target="_blank">Matery</a>
            <br>
            
            
            
            
            
            
            <span id="busuanzi_container_site_pv">
                |&nbsp;<i class="far fa-eye"></i>&nbsp;总访问量:&nbsp;<span id="busuanzi_value_site_pv"
                    class="white-color"></span>&nbsp;次
            </span>
            
            
            <span id="busuanzi_container_site_uv">
                |&nbsp;<i class="fas fa-users"></i>&nbsp;总访问人数:&nbsp;<span id="busuanzi_value_site_uv"
                    class="white-color"></span>&nbsp;人
            </span>
            
            <br>
            
            <span id="sitetime">载入运行时间...</span>
            <script>
                function siteTime() {
                    var seconds = 1000;
                    var minutes = seconds * 60;
                    var hours = minutes * 60;
                    var days = hours * 24;
                    var years = days * 365;
                    var today = new Date();
                    var startYear = "2021";
                    var startMonth = "4";
                    var startDate = "11";
                    var startHour = "0";
                    var startMinute = "0";
                    var startSecond = "0";
                    var todayYear = today.getFullYear();
                    var todayMonth = today.getMonth() + 1;
                    var todayDate = today.getDate();
                    var todayHour = today.getHours();
                    var todayMinute = today.getMinutes();
                    var todaySecond = today.getSeconds();
                    var t1 = Date.UTC(startYear, startMonth, startDate, startHour, startMinute, startSecond);
                    var t2 = Date.UTC(todayYear, todayMonth, todayDate, todayHour, todayMinute, todaySecond);
                    var diff = t2 - t1;
                    var diffYears = Math.floor(diff / years);
                    var diffDays = Math.floor((diff / days) - diffYears * 365);
                    var diffHours = Math.floor((diff - (diffYears * 365 + diffDays) * days) / hours);
                    var diffMinutes = Math.floor((diff - (diffYears * 365 + diffDays) * days - diffHours * hours) /
                        minutes);
                    var diffSeconds = Math.floor((diff - (diffYears * 365 + diffDays) * days - diffHours * hours -
                        diffMinutes * minutes) / seconds);
                    if (startYear == todayYear) {
                        document.getElementById("year").innerHTML = todayYear;
                        document.getElementById("sitetime").innerHTML = "本站已安全运行 " + diffDays + " 天 " + diffHours +
                            " 小时 " + diffMinutes + " 分钟 " + diffSeconds + " 秒";
                    } else {
                        document.getElementById("year").innerHTML = startYear + " - " + todayYear;
                        document.getElementById("sitetime").innerHTML = "本站已安全运行 " + diffYears + " 年 " + diffDays +
                            " 天 " + diffHours + " 小时 " + diffMinutes + " 分钟 " + diffSeconds + " 秒";
                    }
                }
                setInterval(siteTime, 1000);
            </script>
            
            <br>
            
        </div>
        <div class="col s12 m4 l4 social-link social-statis">
    <a href="https://github.com/2528104776" class="tooltipped" target="_blank" data-tooltip="访问我的GitHub" data-position="top" data-delay="50">
        <i class="fab fa-github"></i>
    </a>



    <a href="mailto:2528104776@qq.com" class="tooltipped" target="_blank" data-tooltip="邮件联系我" data-position="top" data-delay="50">
        <i class="fas fa-envelope-open"></i>
    </a>







    <a href="tencent://AddContact/?fromId=50&fromSubId=1&subcmd=all&uin=2528104776" class="tooltipped" target="_blank" data-tooltip="QQ联系我: 2528104776" data-position="top" data-delay="50">
        <i class="fab fa-qq"></i>
    </a>







</div>
    </div>
</footer>

<div class="progress-bar"></div>


    <!-- 搜索遮罩框 -->
<div id="searchModal" class="modal">
    <div class="modal-content">
        <div class="search-header">
            <span class="title"><i class="fas fa-search"></i>&nbsp;&nbsp;搜索</span>
            <input type="search" id="searchInput" name="s" placeholder="请输入搜索的关键字"
                   class="search-input">
        </div>
        <div id="searchResult"></div>
    </div>
</div>

<script type="text/javascript">
$(function () {
    var searchFunc = function (path, search_id, content_id) {
        'use strict';
        $.ajax({
            url: path,
            dataType: "xml",
            success: function (xmlResponse) {
                // get the contents from search data
                var datas = $("entry", xmlResponse).map(function () {
                    return {
                        title: $("title", this).text(),
                        content: $("content", this).text(),
                        url: $("url", this).text()
                    };
                }).get();
                var $input = document.getElementById(search_id);
                var $resultContent = document.getElementById(content_id);
                $input.addEventListener('input', function () {
                    var str = '<ul class=\"search-result-list\">';
                    var keywords = this.value.trim().toLowerCase().split(/[\s\-]+/);
                    $resultContent.innerHTML = "";
                    if (this.value.trim().length <= 0) {
                        return;
                    }
                    // perform local searching
                    datas.forEach(function (data) {
                        var isMatch = true;
                        var data_title = data.title.trim().toLowerCase();
                        var data_content = data.content.trim().replace(/<[^>]+>/g, "").toLowerCase();
                        var data_url = data.url;
                        data_url = data_url.indexOf('/') === 0 ? data.url : '/' + data_url;
                        var index_title = -1;
                        var index_content = -1;
                        var first_occur = -1;
                        // only match artiles with not empty titles and contents
                        if (data_title !== '' && data_content !== '') {
                            keywords.forEach(function (keyword, i) {
                                index_title = data_title.indexOf(keyword);
                                index_content = data_content.indexOf(keyword);
                                if (index_title < 0 && index_content < 0) {
                                    isMatch = false;
                                } else {
                                    if (index_content < 0) {
                                        index_content = 0;
                                    }
                                    if (i === 0) {
                                        first_occur = index_content;
                                    }
                                }
                            });
                        }
                        // show search results
                        if (isMatch) {
                            str += "<li><a href='" + data_url + "' class='search-result-title'>" + data_title + "</a>";
                            var content = data.content.trim().replace(/<[^>]+>/g, "");
                            if (first_occur >= 0) {
                                // cut out 100 characters
                                var start = first_occur - 20;
                                var end = first_occur + 80;
                                if (start < 0) {
                                    start = 0;
                                }
                                if (start === 0) {
                                    end = 100;
                                }
                                if (end > content.length) {
                                    end = content.length;
                                }
                                var match_content = content.substr(start, end);
                                // highlight all keywords
                                keywords.forEach(function (keyword) {
                                    var regS = new RegExp(keyword, "gi");
                                    match_content = match_content.replace(regS, "<em class=\"search-keyword\">" + keyword + "</em>");
                                });

                                str += "<p class=\"search-result\">" + match_content + "...</p>"
                            }
                            str += "</li>";
                        }
                    });
                    str += "</ul>";
                    $resultContent.innerHTML = str;
                });
            }
        });
    };

    searchFunc('/search.xml', 'searchInput', 'searchResult');
});
</script>

    <!-- 回到顶部按钮 -->
<div id="backTop" class="top-scroll">
    <a class="btn-floating btn-large waves-effect waves-light" href="#!">
        <i class="fas fa-arrow-up"></i>
    </a>
</div>


    <script src="/libs/materialize/materialize.min.js"></script>
    <script src="/libs/masonry/masonry.pkgd.min.js"></script>
    <script src="/libs/aos/aos.js"></script>
    <script src="/libs/scrollprogress/scrollProgress.min.js"></script>
    <script src="/libs/lightGallery/js/lightgallery-all.min.js"></script>
    <script src="/js/matery.js"></script>

    <!-- Baidu Analytics -->

    <!-- Baidu Push -->

<script>
    (function () {
        var bp = document.createElement('script');
        var curProtocol = window.location.protocol.split(':')[0];
        if (curProtocol === 'https') {
            bp.src = 'https://zz.bdstatic.com/linksubmit/push.js';
        } else {
            bp.src = 'http://push.zhanzhang.baidu.com/push.js';
        }
        var s = document.getElementsByTagName("script")[0];
        s.parentNode.insertBefore(bp, s);
    })();
</script>

    
    <script src="/libs/others/clicklove.js" async="async"></script>
    
    
    <script async src="/libs/others/busuanzi.pure.mini.js"></script>
    

    

    

    <!--腾讯兔小巢-->
    
    

    

    

    
    <script src="/libs/instantpage/instantpage.js" type="module"></script>
    

</body>

</html>
